一、危险权限需要在配置文件AndroidManifest.xml声明如下：

<uses-permission android:name="android.permission.CALL_PHONE"/>

二、也需要动态申请权限：

public class TestActivity1 extends Activity {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test1);
    }
    //不需要申请权限都行
    public void actionDial(View view) {
        Intent intent = new Intent(Intent.ACTION_DIAL);
        Uri data = Uri.parse("tel:" + "10086");
        intent.setData(data);
        startActivity(intent);
    }
    //需要申请权限
    public void actionCall(View view) {
        if (ContextCompat.checkSelfPermission(this,
                Manifest.permission.CALL_PHONE)
                != PackageManager.PERMISSION_GRANTED) {

            ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission.CALL_PHONE},
                    1);
        } else {
            callPhone();
        }
    }

    private void callPhone() {
        Intent intent = new Intent(Intent.ACTION_CALL);
        Uri data = Uri.parse("tel:" + "10086");
        intent.setData(data);
        startActivity(intent);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {

        if (requestCode == 1) {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                callPhone();
            } else {
                // Permission Denied
                Toast.makeText(TestActivity1.this, "Permission Denied", Toast.LENGTH_SHORT).show();
            }
            return;
        }
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    }
}